Minor update to Dockerfile

Dockerfile

@@ -2,12 +2,17 @@ FROM python:3.11.5-slim
 
 WORKDIR /app
 
+# Copy the application files into the container
 COPY app.py requirements.txt /app/
 COPY src /app/src
 COPY indexes /app/indexes
 
+# Install dependencies
 RUN pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir -r requirements.txt
 
+# Expose the port on which your application runs inside the container
+EXPOSE 5555
+
 # Use ENTRYPOINT to specify the command to run when the container starts
 ENTRYPOINT ["python", "app.py"]